• 责任者：Huang Zhilong (State Key Laboratory of Petroleum Resource and Prospecting ; China University of Petroleum ; Beijing 102249 ; China) ; Wang Bin
• 刊名：Journal of Earth Sciences and Environment
• 出版年：2013
• 卷期：35(3)
• 关键词：烃源岩 ; source rocks ; 松辽平原 ; Songliao Plain
• 页码：p.55-65
• 图表：3 illus., 7 tables, 36 refs.
• 分类号：1003
• issnNo：ISSN1672-6561
• isbnNo：CN61-1423/P

     The type of organic matter from Upper Paleozoic source rock in Songliao Basin is type Ⅲ , and the thermal evolution is generally in high-over mature stage. A long-term exposure and erosion happens during Triassic in Songliao Basin, and then rapid deep burial happens, causing secondary hydrocarbon generation in Upper Paleozoic source rock. So, the comprehensive evaluation of gas generation potential in Upper Paleozoic source rock should include the first hydrocarbon generation and the secondary hydrocarbon generation. Based on the hydrocarbon generation thermal simulation experiment and the recovery of vitrinite reflectance and organic carbon content, it is confirmed that the hydrocarbon generation potential of Upper Paleozoic source rock in Songliao Basin is limited nowadays, but the characteristic of hydrocarbon generation potential in geological history is obviously different in each region. The first hydrocarbon generation is mainly in the western and northern parts of Songliao Basin, and the secondary one is mainly in the eastern part. According to the above recovery of key parameters,the first gas generation and secondary one are respectively calculated by the means of thermal degradation rate. The calculated results show that the first gas generation from Upper Paleozoic source rock in Songliao Basin is about 566.24 × 10^12 m3, and the gas resources produced by secondary gas generation is （0.97-1.29） × 10^12 m3 ; secondary hydrocarbon generation of Upper Paleozoic source rock in Songliao Basin mainly happens in Daqing-Zhaozhou and Da＇an-Nong＇an areas, while there is no gas generation in the western part of Songliao Basin, the scope of gas generation is small in the northern part, and the generation is efficient in the eastern part.